remove webindex

This module is outdated and incomplete. We can readd an improved version in
the future.

Move nanopos nginx proxy tests to the nanopos test.

modules/presets/enable-tor.nix

@@ -20,7 +20,6 @@ in {
     nbxplorer.enforceTor = true;
     spark-wallet.enforceTor = true;
     recurring-donations.enforceTor = true;
-    nix-bitcoin-webindex.enforceTor = true;
   };
 
   # Add onion services for incoming connections

modules/presets/secure-node.nix

@@ -15,7 +15,6 @@ in {
   imports = [
     ../modules.nix
     ../nodeinfo.nix
-    ../nix-bitcoin-webindex.nix
     ./enable-tor.nix
   ];